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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

City of El Mirage

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND90ND
2015ND80ND
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-223090387ND
2014-08-223090450ND
2014-08-223090430ND
2014-08-223090421ND
2014-08-223090473ND
2014-08-223090482ND
2014-08-223090441ND
2014-08-223090412ND
2014-08-223090397ND
2015-02-233193479ND
2015-02-233193189ND
2015-02-233193470ND
2015-02-233193180ND
2015-02-233193134ND
2015-02-233193125ND
2015-02-233193160ND
2015-02-233193488ND